javascript 如何从数组中的每个数字中减去 1？
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时间：2020-10-28 16:04:43 来源:igfitidea点击:
How do I subtract 1 from each number in an array?
提问by W30
If I have
如果我有
var numberarr = [1, 2, 3, 4, 5];How would i make it into
我将如何使它成为
var numberarr2 = [0, 1, 2, 3, 4];by decrementing 1 from each element?
通过从每个元素递减 1？
回答by Austin Brunkhorst
回答by Heman Gandhi
Try this:
试试这个：
// Create an array to hold our new values
var numberArr2 = [];
// Iterate through each element in the original array
for(var i = 0; i < numberArr1.length; i++) {
// Decrement the value of the original array and push it to the new one
numberArr2.push(numberArr1[i] - 1);
}
